Antifriction bearing



Dec. 4,1923. 1,476,055

C. E. DATH v ANTIFRCTION BEARING Filed Dec. 27. 192i Fig] Patented Dec.4, 1923.

UNITED sraras PATENT omer.,

CHARLES E. DATH, or CHICAGO',l ILLINOIS, AssIGNoia To wILIiIAivIlH..MI1\TI3R, 0F

cHAZY, NEW YORK.` i

ANTIFRICTION BEILLtIVlIGr.'v

Application filed December 27, 1921., serial 110.525,11).

To all whom it may cof/acera:

Be it known that I, CHARLES E. DATH, a

citizen of the United States, residing. at

- forming a part of this specification. l.

This invention relates to Improvementsfm` anti-'friction bearings.

In the manufacture, shipping andappli-v cation ofanti-frictionlbearings, particularly anti-friction bearings employed asside bearings on railway cars, itishighly-essential l. y

kwhich extend through correspondingly lothat the'entire device beshipped completely assembled without possibility of any ofthe partsbecoming lost or disarranged `either A accidentally or lfrom' deliberatetampering.

Many 'expediente have heretofore-been suggested for 'permanentlyretaining the parts .of side bearings fin'assembled relation, but -manyof the same'ha've not proved-'entirely .satisfactory duey to 4either theexpense of applying suchretaining means or the diliicultyf in alwaysapplying'the same properly, due to the variations which necessarilyoccur"-in themanufacture .of-th'e1parts, most 'of 30which are in the formof-castings.

The objectofmy invention is to lprovide a simple, effective andrelatively inexpensive means for retaining the parts of an anti-frictionbearing in'assembled relation and more particularlyll'as applied to aside' bearingfor railway cars. r i

In the drawingforming apart of -this specification, Figure 1 isaverticalsectional view taken parallel to the length of a car 40 through theendsz'of'the body and truck bolsters and showing my improvements inconnection therewith. Y Fig. 2 is avertical sectional viewcorrespond-ing substantially 1 to the broken section line 2 2 ofFigure 1. And Fig. 3 is a detail perspective of one of the retainingstuds prior to its application to the other parts of the sidebearing.

In said drawing, 10 indicates the under side of ka body bolster of a carand 11 the 5 upper side of an opposed truck bolster. In the instanceshown, the improved side bean ing is applied to the truck bolster andthe same comprises, broadly, a housing, base casting or retainingmemberV designated generally by the reference A; a wear or bear-v ingplate B; rolling-I antifriction element .proper C; and special meansifo-r retaining the parts assembled hereinafter specificallyl f p 'y Theretaining member orbase castingA, as shown, 1s formed with a bottom wall12,

'vertically extending spaced side walls" 13A-13, vertically extending'end walls'llle-ll, re- 'enforcing and limitingv ribsV15-15 ontheinterior "of the casting at the ends thereof,

and cornerlugsor ears 16-16 by which the casting is adapted-to beriveted or otherwise rigidly secured' to the *truck bolster.

Cn its interior, the base' casting A, in the bottom thereof, ispreferablyprovided with a pair of upstandingknobs or teeth 17a-17,

the latter project upwardly and are adapted to engage` in correspondingopenings 19-19 provided in the bottom of theanti-friction" element C to`thereby preventthe'latter from being shifted bodily Vwith respect to,`the base casting A. Y

The anti-friction element properC, in the form shown, is of the rollinglrocker gravity self-centering type and is preferably formed with top andbottom concentric bearing sur-1 faces 2O and'21, thel latter being oflonger radius than the former. tom bearing surfaces 2O and 21- aremerged with arcuate side surfaces A22--22. With the arrangement shown,it ,is evident that, when the element is shifted to eithervside of itsnormal central position shown in Figure 1, the center of massis-elevated and consequently the element will"j'automatically yreturn.to centralposition upon removal of the actuatingfo-rce. Tol retain theelement C permanently within the base casting A, which, in turn, willretain the wearing plate B in position, I employ the following means.The rocker element C, when cast, is formed with recesses 23-23 on eachend thereof in axial alinement. Each of said recesses 23, at its innerend, is ared toward the center ofthey rocker, as indicated atr23a andprojecting within the flared recess at its inner end is a cone-y shapedlug 24 integral with the body of the rocker element C. Y a

The side Walls 13 of the base casting are Saidtop and bot- 'of each ofthetubnlar studs D is `provided nation with aretaining member having aY`rality Iof tangs A217-27.

with a pluralityrelt longitudinally extending cuts 26-26 which may be`conveniently formed by sawing7 thereby leaving a plu- The tubular studsDyin the condition shown in Figure and above described, are then passedthrough the respective openings of therbase casting A and driveninto theopenings 23 of the rocker element C, landfon account of the elasticityof the metal comprising the studs l). ,and the peculiarforn'iationwithin'the rocker element 0,' the ytangs 27 will be flared or expandedse as to tit snugly within the inwardly iiaring portions' 23a-o theopenings of the rocker element C. l In this manner, the following studsD areY permanently (for allpractical purposes)fattached to the rockerelement C and by leaving a portion ot the studs D extending Within orthrough the openings 25 ci" the basev casting, the rocher element Ccannctthereai'terfbe detached from thebase casting, although al'- lowedfull freedom inV rollingback and forth. The -arrangement shown isinexpensive both with respect tothe cost of thematerial and parts andalso with respect to the'labor in assembling the parts. i I claim; f Y

l. In an lanti-ilriction bearing, the combilongitudinally extendingbearing' surface and' spaced side walls; of a cast metal antivfrictionelement adapted'to roll4 back and forth on said bearing surface andbetween said side walls; and means for retaining said element invassembled relation :withsaidretaining member comprising stud members ateach 'end of the antiffriction element Yand projecting therefrom withincorresponding, elongated slots in the side walls to allow said studmembers to Work back and orththerein, said stud members being formed ofmetal each of said stud members having its inner end extending andexpandedwithin a corresponding o'peningin the .anti-friction element tothereby prevent its Withdrawal K therefrom.

2. ln'an anti-'friction bearing, the combination with a retaining memberhaving a longitudinally extending bearing surface'and spaced side walls;of an anti-friction element adapted to roll back and forthon saidbearing surface and between said side wallssaid anti-friction elementbeing formed 'ot metal and provided with inwardly flaring openings atopposite*sidesA and integral raisedy portions at, the inner ends ofsaidopenings;v and means vfor retaining saidV element -in'asse'mbledVrelation with'said retain- `ing member comprising tubular studmembers ateach end of thefanti-fri'ction element, each off said stud'membershaving its inner Vend extended- Within a 'corresponding openingY of theanti-friction .element and ex-` panded within the flaring portionthereof to Vrigidly'attach the samevtosaid element5 the otherends ofsaid stud members projecting beyond the ends'of theanti-frictionelement,

the'side walls or"v thef base casting having openings thereinwithinwhich said extended ends are adapted'fto move back andfl'orth.

3. As an article of manufacture, .an antii'riction elementv for sidebearings, comprising acast'metal body provided with alined inwardlyflaring openings at opposite sides having raised Aportions-at the yinnerends thereonvsaid raised portions beingcast integral with said body,`andoppositely'project-S "ing hollow trunnions'viixedly "secured`v tofsaidbody by khavingtheir'inner ends split and expanded in said -iaringopenings.

4L. As an artic-leef manufacture,- al cast i metal anti-frictionelementfor side' bearings provided with inwardly iaringtrunnionreceivingfopenings at 'oppositefsides thereof, and' conical raisedportions i at .the vinner ends of said openings, said raised Vport-ionsbeing cast integral with saidelement.

In Witness that I claim the foregoingl have hereunto subscribed myname'this 9th day of-Dec.,l921.

' f yCHARLES DATH,

Witnessess:

" UNA C. Gnissv,

ANN BAKER.

